2112010021 has 4 divisors (see below), whose sum is σ = 2304010944. Its totient is φ = 1920009100.

The previous prime is 2112009997. The next prime is 2112010027. The reversal of 2112010021 is 1200102112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2112010021 - 2¹⁷ = 2111878949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112010027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96000445 + ... + 96000466.

It is an arithmetic number, because the mean of its divisors is an integer number (576002736).

Almost surely, 2^2112010021 is an apocalyptic number.

It is an amenable number.

2112010021 is a deficient number, since it is larger than the sum of its proper divisors (192000923).

2112010021 is a wasteful number, since it uses less digits than its factorization.

2112010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192000922.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 2112010021 is about 45956.6101991868. The cubic root of 2112010021 is about 1283.0157612061.

Adding to 2112010021 its reverse (1200102112), we get a palindrome (3312112133).

The spelling of 2112010021 in words is "two billion, one hundred twelve million, ten thousand, twenty-one".